As his classmates celebrate their middle school graduation, troubled Mirai is mired in darkness. But his battle is just beginning when he receives some salvation from above in the form of an angel. Now Mirai...

Utsutsu and Yume Hasegawa have been living all on their own. One day, Yume sees red butterflies and something strange happens to her body!! As the siblings are toyed with by “Pupa,” so begins their tale ...